Chemistry - Ideal Gas Question with Solution | TestHub

The pressure of a gas is defined as the force exerted per unit area. The pressure exerted by the atmosphere on Earth’s surface depends on the altitude of the geographical region and can be measured by a barometer. The height of the raised Hg column indicates the relative pressure. The absolute pressure is given by $p=\rho gh$.

The pressure of a gas in a closed flask is measured by a manometer.